SU578022A3 - Coupling unit of nuclear reactor regulating member drive - Google Patents

Description

one

The invention relates to atomic technology.

There are known devices in which the drive mechanism is moved to the open position or closed manually with a special tool.

In another known technical solution, the gripping control is performed remotely, but for this the drive of the regulator is equipped with a special gripping drive.

The disadvantage of these technical solutions is the complexity of the gripping control mechanisms.

The known coupling unit of the drive of regulating bodies of the nuclear reactor contains a spring clamp mounted on the drive shaft of the prigol a with the possibility of moving the fire shaft in the axial direction to the engagement position and the position of disengagement from the retuling organ.

However, when a well-known knot of the central unit holds the gripping position in the engaged position, it is necessary to supply energy

operations of remote engagement and disengagement of the drive and regulator

The aim of the invention is the ynpomeinie of the remote control of the seizure of the drive of the regulator of the nuclear reactor. This is achieved by having a sleeve with grooves mounted on the drive shaft relative to the shaft axis, and the grip is made with an interface with the end face of the regulator and provided with BHCTynaMBs fixed on the grip and movably entering into the grooves with walls parallel to the axis of the sleeve, which are made as two rows separated along the axis, separated by a groove with a depth equal to the depth of the groove, are twice as wide as compared with another row and shifted along the hub angle by half of the smaller pitch from the side of the groove they have a loosening formed by the lead-in chamfer on the base of the walls of each groove. Moreover, the expansion of all the grooves in the angle of the sleeve is directed in one direction.

Fig. 1 shows a clutch assembly, with a slit (to the left of the axis in the position of the coupling, to the right in the position of disengagement with the adjusting rod); on (} ng. 2 - contour of the side surface of the sleeve with grooves and grooves and the contours of the protrusion in intermediate positions, the web coupling consists of a spring collet gripper, including a collet with locking pins 1, mounted on the pipe 2, which is installed with axial movement relative to the shaft the drive 3 and is spring loaded 4. The shaft of the iriod 3 within the pipe 2 is reduced in diameter and terminated by a plunger 5, which for smooth engagement of the collet is equipped with a spring 6 and the coupling 7. The collet has annular projections 8 which, when meshed the annular grooves 9 on the tip 10 of the control rod 11 .. Inside the drive shaft; 3 passes the rod 12 indicating the presence of the regulator n in the seam. Outside the drive shaft 3 there is a sleeve 13c rotatable about the axis of the shaft 3, and the pipe 2 is fixedly mounted protrusions (pins) 14, which are inserted into the axial grooves 1S of the sleeve 13. The end 16 of the pipe 2 forms the engagement surface with the adjusting rod. CteeBbie grooves are spaced along the axis of the sleeve and having placed its side surfaces 17 and 18 separated by an annular recess of 19 g of the barrel that is equal to the depth of the grooves 15. In addition to the grooves 15, there are depressions 20 on the sleeve 13 in row 18, located between grooved r yes. . The grooves 15 and 17 are doubled more often with the grooves 15 and da 18 and are displaced in an angle around the sleeve 13 to the half of the grooves in row 17. The grooves 15 and depressions 2O on the side of the point 19 have an extension 21 formed by the lead-in facades 22 of one of the stems wok 23 grooves 15. Chamfers 22 are made on the right-shaped mandrels 23 of each tracing paper 15 so that extensions 21 are directed along the angle of sleeve 13 in one direction. The arrow indicates the direction of movement of the bushings 13 when Jvi 1 is moving forward (upward and downward) of the protrusion 14, Letters A-K towards the arrows between them indicate the length and intermediate positions of the protrusion 14 when moving together with the pipe 2 relative to the drive shaft 3. The coupling node works as follows . The regulator rod lead (not shown in the drawing) moves down the drive shaft 3 together with the pipe 2, which is pressed spring 4 as far as possible. When the end 16 of the pipe 2 rests against the tip 1O of the rod 11, the petals 1 of the collet will engage their protrusions 8 against the annular grooves 9 of the tip 1O. The plunger 5 is in the lower position relative to the collet (see Fig. 1 to the left of the axis). Upon further movement of the drive shaft 3 down, together with the sleeve 13, first the walls of the depression 2O, and then the walls of the groove 15 p and 17 interact with the protrusion 14, turning the sleeve 13 to the position when the protrusion 14 from position X) moves to position Ж. Subsequent raising of the drive shaft 3 and the sleeve 13, the protrusion 14 moves to the K position, which corresponds to the upper position of the plunger 5 (see Fig. 1 from the axis) when the collet petals under the action of the plunger 5 moved upwards by the spring 4, their protrusions 8 In the valleys 9 and the drive coupling with the control rod 11 will occur. The stop of the rod 12 in the control rod 11 gives the signal to perform the act of coupling. When the shaft is subsequently lowered, drive 3 with the plunger 5 and the petals 1 will come out of the engagement with the tip 1O. At the same time, the protrusion 14 will move from position A to position B. The subsequent release of the drive shaft 3 from the drive force acting downwards will cause the shaft 3 to lift up with the sleeve 13 under the action of the spring 4. This will cause the tab 14 to switch from position B to position U. In this position, the plunger will be slowed down by upward movement, which means that it remains below the petals 1 and the act of unlocking the collet is complete, the collet remains open. Upon further raising of the drive shaft 3, the pipe 2 and the rod 12 rise, the clearance between its lower end and the tip end Y. The rod 12 selects this gap, it moves freely downward by a larger amount than was possible when the collet was hooked to the rod 11. Thus, the rod signals the absence of a control rod 11 in the grip. By virtue of the proposed mechanism, the locking of the gripper in the engaged and disengaged position provides automatic control of the gripping at the simplest movements, thus simplifying the operation of the remote control of the gripping. and 3 about the bar and Uzep Formula formula of the regu-reating oriental reactor, supporting spring grip mounted on the drive shaft with the ability to move the shaft in the axial direction to the position of engagement and disengagement from the regulatory body By the fact that, in order to simplify the distance control (gripping control, on the drive shaft, a sleeve with grooves is mounted with respect to the axis of the shaft relative to the axis of the shaft. The protrusion and the protrusions 15 are fastened at the grip and movably entering into the grooves with walls parallel to the hub sleeves, which are made in the form of two rows spaced along the axis, separated by a groove equal to the depth of the groove, are twice as often compared to another and shifted on the corner of the sleeve half the smaller step and on the side of the undercut have an extension formed by the lead-in chamfer on one of the walls of each konavka, with the expansion of all the grooves in the corner of the sleeve directed in one direction. Sources of information taken into account during the examination; 1. Patent Angpni No. 1104025, Kn.Q 6 C, November 16, 65. 2. US patent No. 3364120, cl. 176-36, 24.O2.66. 3 Wordsurth A. D Technique of work with nuclear fuel. Atomizdat, 1965, p. 52, fig. 10.3.

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